OpenResty effectively turns the nginx server into a powerful web app server, in which the web developers can script various C and Lua modules to create extremely high-performance web applications that are capable to handle 10K+ connections.

Couchbase is a high-performance, reliable and easy to use NoSQL database that scales linearly from 1 to 100+ nodes and provides predictable result performance. Aside from being a fast key-value store, it provides querying through views (like CouchDB) in the new 2.0 release.